OR as grumpy , old & very cynical me is thinking. The Gun Makers want to sell some more guns. So they invent this new round that will do everything but go around corners, never miss, clean it and then cook it.
Sorry folks but as the late Master Gunner Ian Hogg said a very long time ago. We have taken small arms ammo as far as it can go . So stick with the classics and you really cannot go too far! Grumpy